Save Changes Automatically
As you work in the mapper, your changes are automatically saved. User actions in the mapper such as creating a mapping line by dragging and dropping from source to target or saving in the Expression Builder are saved automatically internally without the need to press Validate.
This is useful for scenarios in which your browser crashes or your instance
undergoes patching while you are working in the mapper. When you resume editing, you are
given an option to edit and recover your changes.